Ningbo Marshal Automotive Parts Co., Ltd.
About Us
We are a professional China spark plug manufacturer and Spark Plugs supplier & factory which has a variety of product lines for Spark Plugs manufacturing, engineering and technical capabilities and manufacturing capabilities are in constant progress.
In terms of engineering skills, we have 30 years of development and reverse engineering experience. The electrode has PASS TUV, CONFORM TO RoHs & Reach. High-strength insulators use a 360°Continuous Laser technology.
In manufacturing, it also has a ceramic factory, ceramic Insulators are completely self-produced, with a high density of insulators, better dielectric strength, thickened design of insulator nose, and better mechanical strength which can satisfy modern engines well. Secondly, electrodes have better electrical conductivity, heat resistance, heat dissipation, and ablation resistance. Shells have better malleability, better toughness, and higher hardness which can reduce shell breaking and help the shell for better heat dissipation.
In terms of experimental capacity, the laboratory fully complies with and strictly implements 17 international and national spark plug industry test standards; enterprise internal control standards of more than 34 original supporting level type tests; and process inspection coverage of the whole process of control points.
Quality management has obtained the quality management system certification.
Company for some spark plugs and design patent certificate, utility model patent certificate.
OEM & ODM Service
We offer two flexible cooperation models: OEM Service and ODM Service.
OEM Service
Manufacturing precisely to your specifications. You provide the design, we deliver the product.
Huge Capacity, On Demand
Annual output reaches 120 million pieces. Our new workshop launching in 2026 will deliver extra monthly capacity exclusively for OEM clients.
Quality Assured, Cost Optimized
With in-house manufacturing of ceramic insulators and shells, and certified to IATF 16949 and ISO 14001, we deliver cost-effective quality you can trust.
Smart Control, Full Traceability
ERP & MES power traceability across all OEM workflows. Every step from raw material inspection to shipment is digitally tracked for reliable delivery.
ODM Service
Full-cycle custom development. You bring the brand, we bring the engineering.
Decades of Expertise
30 years of spark plug reverse engineering, replicating equivalent performance matching all OEM samples.
900+ SKUs
Massive standardized inventory with flexible customization. Electrode materials, heat range, packaging and private label are adaptable to needs.
45-Day Development Time
Rapid development without the upfront R&D burden. We handle the engineering so you can focus on selling.
Founded with the ambition to build world-class spark plugs for global automotive industry.
We launched mass production of 95% Al₂O₃ porcelain insulators, establishing the solid foundation for high-performance spark plugs.
Our first automatic hot-lock assembly line went online. Resistor-type spark plugs entered mass production to meet rising market demands.
Precious-metal spark plugs were officially launched. German IPG 360° continuous laser welding technology was adopted to guarantee stable ignition under extreme working conditions.
Advanced cold-lock caulking technology was introduced from Japan. We built an in-house laboratory for insulator physical and chemical testing to enforce strict quality control.
Precision insulator manufacturing equipment underwent comprehensive upgrades. The M10/M8 series lightweight high-performance spark plugs debuted for modern downsized engines.
Full-scale production of industrial spark plugs commenced, bringing reliable ignition solutions to power equipment and heavy-duty machinery.
We attained official certification and became an OES supplier for PSA Group and Ford.
Supported by integrated R&D and automated workshops, our annual production volume reached 120 million pieces.
Honoured to be selected as an official OES supplier serving Stellantis Group worldwide.
Ningbo Marshal Auto Parts Co., Ltd. has a well-structured professional team covering the entire chain from strategy to production. All departments work together to drive continuous improvement in quality and service.
- Materials Control: Planning, procurement and warehouse management for smooth production.
- Quality: Full-process quality control to meet standards and customer expectations.
- Production: Specialized workshops for refined, segmented production management.
- Finance: Accounting, cost control and fund management supporting business decisions.
- Sales: Foreign trade, domestic sales, aftermarket, OEM and host matching to expand markets globally.
- Technology: Product development, process design, ERP, packaging and process assurance to drive innovation.
- Administration: Talent planning, staffing and culture development to build our future.
At Marshal, R&D and Quality stand as one team, united by one goal and bound by one closed-loop system.
From ceramic formulas to electrode materials to shell structures, every design considers process feasibility and quality risks. Starting at project initiation, R&D and quality engineers co-create control plans for product stability.
Production, quality and technology teams work under IATF16949. 100% inspection at critical control points. Full traceability from raw materials to finished products.
Our lab complies with ISO 11565:2016, covering 17 test requirements and 4 OEM standards. Market feedback fuels continuous improvement, enabling our products and team to evolve side by side.
R&D and QC as one. Craftsmanship in every hand. Confidence in every ignition.
